Furnace.



G. WILTON.

FURNAGE.

APPLICATION FILED JUNE 14, 1912.

Patented Dec. 9, 1913.

NETE@ STATES PATENT UFFlClil GERGE WILTUN, OF HENIDON, ENGLAND.

FURNACE.

Application filed J'une 14, 1912.

To aZZ whom t may concern lie it known that l, GEORGE lVIL'roN, ofCBaigoed Station Road, Hendon, in the county of Middlesex, England, asubject of the liing of Great Britain and Ireland, engineer, haveinvented certain new and useful improvements in or Relating to Furnaces,of which the following is a specification.

This invention relates to furnaces of the kind wherein a perforatedsurface is formed by a series of transverse sections or members whichwhen assembled form blast pipes or chambers. The sections are in somecases supported upon a trough.

According to this invention l provide in the base of the flue or furnacea trough or cradle (hereinafter referred to as the trough made of adetermined length and with raised ends so arranged that the severaltransverse sections which are to forni the blast pipes or passages canbe iitted together in a row or in the trough without requiring anythrough bolts for holding the parts together, and in such manner thatany section can be lifted out and replaced or renewed. The sections areeach provided with downwardly projecting webs disposed longitudinally soas to support the grate surface of the sections above the trough andalso form the division walls between the passages through which theblast is directed. rl`he trough also is made in one continuous lengthand is watertight throughout its length so that any water leaking`through from the steam at the inlet end of the blast pipes will bereceived in the trough and will not come in contact with the boilerflue.

lin some cases water may be placed in the trough and the blast may beprovided by a suitable fan or blower instead of a steam jet, in thiscase the water in the trough provides the necessary cooling means bothby its presence and the steam generated therefrom.

rlhe accompanying drawings illustrate one construction made inaccordance with the present invention.

Figure 1 is a section on the line fte-w of Fig. 2, parts being brokenfor the sake of clearness. Fig. 2 is a section on the line jz/my of Fig.l. Fig. 3 is a section on the line e-e of Fig. 1. Fig. t is a section onthe line '1J-o of Fig. l. Fig. 5 is a view similar to Fig. 2 showing amodified construction.

Specification of Letters Patent.

Fatented Dec. '0, .l 913.

Serial No. 703,600.

ln the base of the flue a is fitted av trough t consisting` of a, platemade to the shape of the flue and having at its ends turned up parts Z"t2. Disposed above the trough and covering in the same are the sectionsc a number of which are assembled together in or on the trough to formthe blast pipes, or passages (Z (Z2 d3. For this purpose the sectionsare provided with downwardly extending webs e e which rest in sockets oragainst retaining ribs j running along the base of the trough.

The sides of the sections terminate close against the sides of the flueand meet the edge of the trough. The three blast passages Z (Z2 Z3 arethus formed, the center passage Z2 being formed by the trough at itsbase, the tol s and sides by the sections and the downwardly extendingwebs c e. rThe two side blast passages Z and d are formed by thesections on the top, the web on the one side, the trough t on the other.As a modification the trough may be made shallower and the boiler fluemay form part of one side cf the outer blast furnace.

'lhe several sections are assembled in the trough t which is made tocontain a certain number of sections, and the steam blast nozzles 7L areprovided with an end plate 7L coupling several blastnozzles togetherwhen there are more than one. The said plate ZL lits onto the end platet of the trough which comes against the iirst of the blast pipe sections0.

ln use the fuel is piled up in the flue a as indicated by the dottedlines m in the manner usually adopted with this type of furnace and theblast is operated by steam in the usual way. Any water which may dripfrom the blast pipe is received in the trough Z and is graduallyevaporated or may be drawn oil.

Fig. 3 shows the end plate t of the trough in front elevation.

To assist in the consumption of the smoke l employ that type ofsupplementary air supply where the air, sometimes heated, is dischargedfrom a chamber around the furnace door and to this end l provide an auX-iliary air blast pipe m Figs. l and l the said pipe being carried uparound the ire door, the air being led thereto by pipes m from the blastpipes CZ d3. The pipe m discharges the air forward toward the bridge,whereby during intervals when a large quantity of smoke is made theblast in the titi pipes d Z2 Z3 may be lessened or eased down by drawingod a portion of the air blast from within the blast pipes anddischarging the said portion of air through the auX- iliary blast pipe mthereby assisting the proper combustion of the smoke. The auX- iliaryblast can be regulated by a piston valve m2 which determines thequantity of air w ioh is drawn ofi" from within the blast pipes WL.

VWhat l claim and desire to secure by Letters Patent is l. In a furnace,in combination, a trough member and a plurality of perforated gratemembers extending transversely thereof, each of said grate members beingprovided with a depending web extending in the direotion of the lengthof the trough, the web of each member being in alinement with the websof adjacent members whereby the space between the grate members and thetrough member will be divided into a plurality of passages.

2. in a furnace, in combination, a trough member and a plurality ofperforated grate members extending transversely thereof, each of saidgrate members being provided with a depending web extending in thedirection of the length of the trough adapted to engage said troughmember, the web of each member being in alinement with the webs ofadjacent members whereby the space between the grate members and thetrough member will be divided into a plurality of passages.

3. In a furnace, in combination, a trough member and a plurality ofperforated grate members extending transversely thereof, each of saidgrate members being provided with a depending web extending in thedirection of the length of the trough, the web of each member being inalinement with the webs of adjacent members whereby the space betweenthe grate members and the trough member will be divided into a pluralityof passages, and means for introducing a blast of air into one of saidpassages.

ln testimony whereof I have signed my name to this speeication in thepresence of two subscribing witnesses.

GEORGE l/VILTON. lVitnesses E. C. VALKER, Ronnn'r izlnfroN SrEaRroINT.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents, Washington, D. C.

